Indacenodithiophene-based small-molecule donor with strong crystallinity for efficient organic solar cells

Yan Zheng; Sunan Bao; Hang Yang; Hongyu Fan; Dongdong Fan; Chaohua Cui; Yongfang Li

doi:10.1039/d1cc04559h

Indacenodithiophene-based small-molecule donor with strong crystallinity for efficient organic solar cells

Chem Commun (Camb). 2021 Oct 14;57(82):10767-10770. doi: 10.1039/d1cc04559h.

Authors

Yan Zheng¹, Sunan Bao¹, Hang Yang¹, Hongyu Fan¹, Dongdong Fan¹, Chaohua Cui¹, Yongfang Li^{1

2}

Affiliations

¹ Laboratory of Advanced Optoelectronic Materials, Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and Devices, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China. cuichaohua@sua.edu.cn.
² Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.

PMID: 34585680
DOI: 10.1039/d1cc04559h

Abstract

Two indacenodithiophene (IDT)-based small-molecule analogues (IDBT and IDBT-Cl) are designed as donor materials for organic solar cells. Relative to the amorphous IDBT-Cl, the IDBT with strong crystallinity shows overall better photovoltaic performance when blended with a Y6 acceptor. The results demonstrate the great potential of IDT units in designing efficient small-molecule donors.